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Category: energy – Page 342

Zinc-air batteries provide power in remote areas

NantEnergy says its zinc air battery system can deliver energy for $100 per kilowatt hour. By comparison, lithium ion batteries vary in price, but often range from $300 to $500 per kilowatt hour, according to the Energy Storage Association.

Zinc air batteries will replace lithium ion batteries due to the required 12 pounds of cobalt in car lithium ion batteries. Cobalt supplies is estimated to run out by 2025.

Remote villages in Africa and Asia are receiving electricity using a little-known type of technology: zinc-air batteries.

California-based NantEnergy said Wednesday it has created a rechargeable zinc-air battery storage system that can provide power at a lower cost than lithium-ion batteries.

The technology has been deployed in more than 110 villages serving 200,000 people who have no other access to electricity in their communities, said NantEnergy chairman Patrick Soon-Shiong.

Tenfold improvement in liquid batteries mean electric car refuelling could take minutes

One of the biggest drawbacks of electric vehicles – that they require hours and hours to charge – could be obliterated by new type of liquid battery that is roughly ten times more energy-dense than existing models, according to Professor Lee Cronin, the Regius Chair of Chemistry at the University of Glasgow, UK.

What’s so special about this liquid, or flow, battery?

“A normal electric vehicle has a solid battery, and when that runs out of charge you have to recharge it by plugging it in to a power socket. This takes half an hour or so if you find a rapid charger at a motorway service station, or up to 12 hours at home. Our battery, however, is made of a liquid rather than a solid. If you run out of charge, you could in principle pump out the depleted liquid and – like a regular petrol or diesel vehicle – refill it with liquid that is ready-charged. And that would take minutes.”

6 Charts Showing the Renewables Threat to Natural Gas

Rory McCarthy, senior storage analyst for Wood Mackenzie Power & Renewables, illustrated for attendees how the business case for using renewables in place of natural gas is becoming more compelling following declines in solar and wind costs.

That business case is also improving as a result of massive increases in battery storage, where the U.S. leads the world in terms of operational and planned capacity.

Today, storage capacity amounts to around 6 gigawatt-hours worldwide, but Wood Mackenzie predicts a more than tenfold increase, to at least 65 gigawatt-hours, by 2022. The U.S. will continue to lead this build-out, thanks to its more mature market.

This New Space Tech Could Someday Replace A/C

The United States uses more energy for HVAC than Africa uses for all of their energy needs.

The starry night sky seems remarkably distant from the topic of air conditioning, but it’s revolutionizing the field in quite an unexpected way. In this episode of “The Spark,” watch how scientists from across the globe are harnessing natural phenomena to drastically redesign this century-old technology.

Featured in this episode:

Dr. Ernest (Kian Jon) Chua.
National University of Singapore
http://me.nus.edu.sg/staff.php?id=2164

SkyCool Systems

Continue reading “This New Space Tech Could Someday Replace A/C” | >

Scientists receive $1.3 million to study new propulsion idea for spacecraft

Spacecraft and satellites could in future be launched into space without the need for fuel, thanks to a revolutionary new theory.

Dr Mike McCulloch, from the University of Plymouth, first put forward the idea of quantised inertia (QI) – through which he believes light can be converted into thrust – in 2007.

He has now received $1.3million from the United States Defense Advanced Research Projects Agency (DARPA) for a four-year study which aims to make the concept a reality.

Thousands of trees planted to help prevent power outages

Vector today launched a new programme to raise awareness of the need to keep trees well clear from power lines, by planting thousands more of them to launch the initiative.

The Vector Urban Forest initiative means the power company will replace every tree it must cut down for network management or safety purposes, with two new natives, planted in areas that help with local ecological restoration schemes.

“The Vector Urban Forest is a promise from Vector to plant two native seedlings where they are needed most, and far away from Auckland’s powerlines which will mean Aucklanders’ power supply is better protected”, said Andre Botha, Vector’s Chief Networks Officer.

Devastating solar storm is a matter of ‘when not if’ warns Met Office as Solar Orbiter begins testing

A devastating solar storm which could wipe out communications on Earth and fry power grids is a matter of ‘when not if’ the head of the Met Office’s Space Weather Monitoring centre has warned.

Extreme space weather has already caused widespread disruption, with a geomagnetic storm leaving six million people without power in 1989 while Apollo astronauts narrowly missed being exposed to deadly radiation in 1972 and solar flares in 2003 forced the crew of the International Space Station to take cover.

The largest solar storm ever recorded, The Carrington Event in 1859, knocked out Telegraph systems and even set fire to paper in offices.

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